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Touch panel providing tactile feedback in response to variable pressure and operation method thereof

a technology of variable pressure and touch panel, which is applied in the field of touch panel, can solve the problems of inability to provide tactile feedback to users, inability to use the touch panel, and inability to adapt to 3d,

Active Publication Date: 2014-04-24
ELECTRONICS & TELECOMM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a touch panel that uses an optical waveguide to detect pressure and provide feedback through a vibration. The panel includes a pressure detection unit and an actuator that deforms based on the pressure intensity. The technical effects of this invention include improved tactile feedback and a better user experience.

Problems solved by technology

Therefore, these panels are not suitable for 3D displays that require proximity sensing.
The infrared touch panels and the ultrasonic touch panels are not suitable to obtain a small size and implement a multi-touch function.
However, this touch panel does not provide, to a user, a tactile feeling, i.e. a three-dimensional or haptic feeling, in response to an input.

Method used

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  • Touch panel providing tactile feedback in response to variable pressure and operation method thereof
  • Touch panel providing tactile feedback in response to variable pressure and operation method thereof
  • Touch panel providing tactile feedback in response to variable pressure and operation method thereof

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Embodiment Construction

[0017]Preferred embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be constructed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0018]FIG. 1 illustrates a touch panel according to an embodiment of the present invention. Referring to FIG. 1, the touch panel includes a pressure detection unit 100, an actuator 200, and a substrate 300. The touch panel according to the present invention may be an optical touch panel using optical signals.

[0019]The pressure detection unit 100 may detect pressure intensity and location information in response to a touch input applied externally. In detail, the pressure detection unit 100 includes a light source unit 110, an opti...

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Abstract

A touch panel according to an embodiment of the present invention includes: a pressure detection unit including a light-source unit configured to generate an optical signal, an optical waveguide configured to transfer the optical signal, a sensing unit contacting with the optical waveguide to receive the optical signal according to an intensity of pressure applied externally, and a light-receiving unit configured to receive the optical signal transferred through the optical waveguide from the sensing unit; and an actuator contacting with the pressure detection unit to cause a deformation of a material according to the pressure intensity, wherein the actuator provides a tactile feedback through a vibration according to the pressure intensity.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This U.S. non-provisional patent application claims priority under 35 U.S.C. §119 of Korean Patent Application No. 10-2012-0116708, filed on Oct. 19, 2012, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]The present invention disclosed herein relates to a touch panel, and more particularly, to a touch panel for providing a tactile feedback to a user according to an intensity of externally applied pressure.[0003]Touch panels may be classified into resistive touch panels, capacitive touch panels, infrared touch panels, and ultrasonic touch panels according to operation principles. The resistive touch panels and the capacitive touch panels detect signals generated only by a touch. Therefore, these panels are not suitable for 3D displays that require proximity sensing. The infrared touch panels and the ultrasonic touch panels are not suitable to obtain a small size and implement a multi-touch...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G06F3/01
CPCG06F3/016G06F3/0421G06F2203/04109G06F3/042
Inventor KIM, YOUNG SUNGKYUNG, KI-UKPARK, SUNTAKPARK, BONG JEYUN, SUNG RYULLEE, HAN SAEMCHOI, MI JOENG
Owner ELECTRONICS & TELECOMM RES INST
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